Fixation method of cylinder head airway core

Abstract

The invention relates to a fixation method of an air channel core of a cylinder cover, comprising the steps as follows: firstly, screw holes are prefabricated on the relevant position of the air channel core, the base plate core and water jacket sand core frame; secondly, spread glue on the matching surface of the air channel core, the base plate core and water jacket sand core frame; assemble theair channel core into a sand core group; thirdly, make preparatory baking for the sand core group; fourthly, fasten the air channel core. The invention adopts the flow path of hole prefabricating, glued joint, baking, and fastening to realize the fixation of the air channel core; thus not only the problem that the air channel core floats upward in the process of casting is solved thoroughly, butalso the height of the log boss of the air guide hole on the cylinder cover does not has ultra tolerance, improving the air channel dimensional precision and the swirl rate performance parameter of inlet channel; thus the inlet channel requirements of the diesel engine of Europe III standard are complied. In addition, the fixation method of the invention does not cause any damage to the surface of the air channel core; the loss of defective product caused by the disqualification of the inlet channel performance is reduced, and the product quality and the production efficiency are improved.

Description

technical field [0001] The invention relates to a process method for producing a cylinder head, in particular to a method for fixing an air channel core of the cylinder head. Background technique [0002] At present, when the cylinder head of the domestic cast diesel engine handles the fixing of the airway core, due to the structural reasons of the airway itself, the round core of the airway cannot be fixed, so the process of "fixing the square core of the airway" has to be adopted. The characteristics of this process method are: the position of the airway core is positioned by the square core head and the round core head of the airway, and the airway square is pressed and fixed by the cooperation of the square core head and the core seat of other sand cores (such as water jacket cores). core head, thereby fixing the airway core. [0003] Due to the process of "fixing the square core head of the air passage", the round core head of the intake port cannot be fixed in the hei...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for fixing the airway core of the cylinder head, which can effectively solve the technical defects of the prior art "fixing the square core head of the airway" which cannot meet the quality requirements and will cause a large amount of waste loss. Relieves buoyancy issues and improves airway consistency

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